Rotary motor.



PATENTED JUNE '19, 1906.

1?. ELLIS. ROTARY MOTOR. APPLICATION FILED APR. 19. 1906.

2 sums-sum 1.

l NV EN'TOR, PETER ELLlS BY A-bbow'neg.

WITNESSES;

No. 823,717.. PATENTED JUNE 19, 1906.

I P. ELLIS. ROTARY MOTOR.

APPLICATION FILED APR. 19, 1906.

2 SHEETS-SHEET 2.

w\TNESSES-, INVENTOR v :BTPiZ REL Um AttoTneg 4o socket fixed to the shaft. The outer periph- *UNrTEn-sr-ATEs PATENT oivrren.

13ETER ELLIS, or WELLI GTON, NEW ZEALAND.

RO ARY MOTOR.

To all whom it'may concern: r

Be it known that 1, PETER ELLrs, a subjecttain new and useful Improvements in Rotary Motors, of which the followingis a specifica tion.

This invention provides a motorof simple construction operated by steam, compressed an, or other fluid-pressure.

The invention comprises a drum or boss around which cylinders are arranged radially.

Ports through the drum give communication between the interiors of the cylinders and passages in a spindle, hereinafter referred to. Pistons are fitted into the cylinders, which areopen at their outer ends, so that the pistons may project therefrom. Leakage of steam past the pistons is prevented by cutting circumferential grooves or by fitting piston-rings around the pistons. The drum,

- with its cylinders, is mounted upon a hollow axle havingst'eam and exhaust ports separated by a partition, the said ports communicating, respectively, with the ends of the hollow axle. A casing provided with a cap and having an internal radius greater than drum and radial cylinders, with the excepwhich is left open. One face of the drum fits the distance from the center of the drum to the outer end of the cylinders surrounds the tion of the central part of the said casing,

against a collar upon the end of the hollow axle to prevent leakage of steam. I For a similar reason at the other end of the drum a ferrule fits against the face of the drum, against which it is held by a spring, the ferrule and spring being held in position by a ery of the casing is shaped to suit the class of work to which the motor is to be applied. Thus the said periphery may be shaped as a pulley to receive a belt and maybe lagged with wood or other non-conductor of heat, or

it may be flanged to run upon a rail or adapted for driving by frictional contact.

' The motor is started by turning the hollow axle through part of a circle, when thepistons on the side to which the steamy-port is Specification of Letters Patent Application filed April 19, 1906. Serial No. 312,632.

' rammed June 19, 1906.

The casingand cylinders, withtheir boss,

revolve upon the hollow axle. 1

The steam may beled 'frorn'the exhaustport to a steam-port farther along the hollow, axle andthence to a secondmotor, and so on 6 to othermotors until the expansion of the; steam is exhausted.

The drawings illustrate the invention adapted to driveby friction.

Figure 1 is an elevation; Fig. 2, aplan of the motor; Fig. 3 is apart sectional elevation on line A- B, Fig. 2. Fig. 4 is a plan of the boss; Fig. 5, a-similar view when constructed as acompoundmotor. Fig. 6 shows a shaft Offighe motor,-andFig. 7 a shaft of a compound motor.

Referring to the drawings, the boss 1 is bored to form cylinders 2, 3,4, 5, 6, and 7,

branching radially from the center of the boss, which has a bore 8. Ports 9 provide communication between the bore 8 and the cylinders 2,3, 4, 5, 6, and 7. Pistons 10, 11, 12, 13, 14, and fit the cylinders and are adapted to project therefrom. The ends of the pistons are rounded, or they may be provided with friction rollers. The boss is mounted upon a hollow axle 16, having a steam-port 17 and exhaust-port 18 separated by a partition 19, the port 17 communicating with the end 20 of the axle and the port 18 with the end 21.

A casing 22 has a cap secured by bolts or screws 23 and has an internal diameter greater than the'diameter of the boss 1. The casing-surrounds the boss 1 and has a hole 24 of large diameter.

The motor is started by turning the hollow axle 16 by means of its lever 25 throughpart of a circle, when the cylinders 4 and 5 (see Fig. 3) receive steam from the end 20 of the 95 axle 16 and the pistons12 and 13 are forced outward and press against the interior periphery of the casing. 22, while the cylinders 7, 2, and 3 are open to the exhaust end 21 of the axle 16. -1oo The motor revolves the pulley 26, which has bearings 27 and 28, adjustable laterally by screws 29.

Leakage of steam between the axle and the drum is prevented by collars 30 and 31, inter0 5 gral with the axle and which receive ferrules 32 and 33 respectively, fitting against the faces of the drum and held thereagainst by the spring 34, fitting within the collars behind the ferrules. Steam leaking as aforesaid no finds access to the back of the ferrules, which are forced against the drum and make a steam-tight joint therewith.

What I claim, and desire to secure by Letters Patent of the United States, is

1. A motor comprising in combination, a drum having a series of radially-formed cylinders, pistons for each of said cylinders, a casing of larger circumference receiving said drum and supported only by said pistons and an axle upon which the drum is revolubly mounted, said axle having motive-fluid and exhaust passages, each cylinder having a port giving communication with said motivefluid and exhaust passages in the spindle alternately substantially as specified and illustrated.

2. A motor comprising in combination, a drum having a series of radially-formed cylinders, pistons for each of said cylinders, a loose casing of larger circumference than and receiving said drum and supported only by said pistons and an axle upon which the drum is revolubly mounted, said axle having motive-fluid and exhaust passages, each cylining said drum and supported only on said pistons, a spindle upon which said drum is mounted having passages for the admission and exhaust of motive fluid from said cylinders, the drum and the casing revolving in the same direction substantially as herein specified and illustrated.

In testimony whereof I have signed my name to this specification in the presence of two Witnesses.

PETER ELLIS.

Witnesses:

E. S. BALDWIN, JAMES A. HARDIE. 

